Ford Mustang (1999-2004) Service Manual: Transmission Description (Description and Operation)
The 4R70W has the following features:
- Wide ratio gears
- Four speeds
- Rear wheel drive
- Automatic
- Electronic shift
- Torque converter clutch control
- Line pressure controls
The transmission uses Ravigneaux-style double-pinion gearset with two bands, one one-way roller clutch, one mechanical diode and four friction clutches to produce four forward gears and Reverse.
4R70W Automatic Transmission

Automatic Transaxle/Transmission
General Specifications
a - MERCON V is not interchangeable at this time with the current MERCON
fluids. Check the
transmission fluid level indicator to determine the correct fluid and refer to
the ...
Identification Tags
All vehicles are equipped with a Vehicle Certification Label, located
on the driver side door lock post.
For correct transmission identification, refer to the code in the space
marked TR.
...
Other materials:
Engine (Assembly)
Special Tool(s)
Guides, Connecting Rod
303-442 (T93P-6136-A)
Installer, Crankshaft Vibration
Damper
303-102 (T74P-6316-B)
Installer, Front Cover Oil Seal
303-335 (T88T-6701-A)
Installer, Crankshaft Rear ...
Engine
A modular engine is built around four modules:
the intake module
the cylinder head module (RH)
the cylinder head module (LH)
the lower engine module
While not all repairs can take advantage of the modular concept, mos ...
Pinpoint Tests
PINPOINT TEST A: THE SPEED CONTROL IS INOPERATIVE
Test Step
Result / Action to Take
A1 CHECK THE SPEED CONTROL SERVO VOLTAGE AND
GROUND
YesGO to A3 .
No
GO to A2 .
Key in OFF position.
Disconnect: Speed Control Servo C122.
...
